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Wed, 13 Jul 2011 09:06:28 +0000 Received: from [82.69.122.217] (helo=plug1) by smarthost01.mail.zen.net.uk with esmtpsa (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.63) (envelope-from ) id 1QgvOf-0001yf-0r for linux-arm-kernel@lists.infradead.org; Wed, 13 Jul 2011 09:06:21 +0000 Received: from [192.168.2.20] (helo=computer2) by plug1 with esmtp (Exim 4.72) (envelope-from ) id 1QgvOb-0000RU-Pg for linux-arm-kernel@lists.infradead.org; Wed, 13 Jul 2011 10:06:18 +0100 Received: from tixy by computer2 with local (Exim 4.72) (envelope-from ) id 1QgvOc-0008Hn-76 for linux-arm-kernel@lists.infradead.org; Wed, 13 Jul 2011 10:06:18 +0100 From: Tixy To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 12/24] ARM: kprobes: Migrate ARM space_cccc_0111__1 to decoding tables Date: Wed, 13 Jul 2011 10:06:01 +0100 Message-Id: <1310547973-31784-13-git-send-email-tixy@yxit.co.uk> X-Mailer: git-send-email 1.7.2.5 In-Reply-To: <1310547973-31784-1-git-send-email-tixy@yxit.co.uk> References: <1310547973-31784-1-git-send-email-tixy@yxit.co.uk> X-Originating-Smarthost01-IP: [82.69.122.217] X-CRM114-Version: 20090807-BlameThorstenAndJenny ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20110713_100623_945372_09A338A9 X-CRM114-Status: GOOD ( 14.24 ) X-Spam-Score: -1.9 (-) X-Spam-Report: SpamAssassin version 3.3.2-r929478 on casper.infradead.org summary: Content analysis details: (-1.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [212.23.3.140 listed in list.dnswl.org] -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Wed, 13 Jul 2011 09:10:28 +0000 (UTC) From: Jon Medhurst Signed-off-by: Jon Medhurst --- arch/arm/kernel/kprobes-arm.c | 82 ++++++++++++++++++----------------------- 1 files changed, 36 insertions(+), 46 deletions(-) diff --git a/arch/arm/kernel/kprobes-arm.c b/arch/arm/kernel/kprobes-arm.c index 6203505..58faacc 100644 --- a/arch/arm/kernel/kprobes-arm.c +++ b/arch/arm/kernel/kprobes-arm.c @@ -1373,57 +1373,47 @@ static const union decode_item arm_cccc_0110_____xxx1_table[] = { DECODE_END }; -static enum kprobe_insn __kprobes -space_cccc_0111__1(kprobe_opcode_t insn, struct arch_specific_insn *asi) -{ - /* Undef : cccc 0111 1111 xxxx xxxx xxxx 1111 xxxx */ - if ((insn & 0x0ff000f0) == 0x03f000f0) - return INSN_REJECTED; +static const union decode_item arm_cccc_0111_____xxx1_table[] = { + /* Media instructions */ - /* SMLALD : cccc 0111 0100 xxxx xxxx xxxx 00x1 xxxx */ - /* SMLSLD : cccc 0111 0100 xxxx xxxx xxxx 01x1 xxxx */ - if ((insn & 0x0ff00090) == 0x07400010) - return prep_emulate_rdhi16rdlo12rs8rm0_wflags(insn, asi); - - /* SMLAD : cccc 0111 0000 xxxx xxxx xxxx 00x1 xxxx :Q */ - /* SMUAD : cccc 0111 0000 xxxx 1111 xxxx 00x1 xxxx :Q */ - /* SMLSD : cccc 0111 0000 xxxx xxxx xxxx 01x1 xxxx :Q */ - /* SMUSD : cccc 0111 0000 xxxx 1111 xxxx 01x1 xxxx : */ - /* SMMLA : cccc 0111 0101 xxxx xxxx xxxx 00x1 xxxx : */ - /* SMMUL : cccc 0111 0101 xxxx 1111 xxxx 00x1 xxxx : */ - /* USADA8 : cccc 0111 1000 xxxx xxxx xxxx 0001 xxxx : */ - /* USAD8 : cccc 0111 1000 xxxx 1111 xxxx 0001 xxxx : */ - if ((insn & 0x0ff00090) == 0x07000010 || - (insn & 0x0ff000d0) == 0x07500010 || - (insn & 0x0ff000f0) == 0x07800010) { - - if ((insn & 0x0000f000) == 0x0000f000) - return prep_emulate_rd16rs8rm0_wflags(insn, asi); - else - return prep_emulate_rd16rn12rs8rm0_wflags(insn, asi); - } + /* UNDEFINED cccc 0111 1111 xxxx xxxx xxxx 1111 xxxx */ + DECODE_REJECT (0x0ff000f0, 0x07f000f0), - /* SMMLS : cccc 0111 0101 xxxx xxxx xxxx 11x1 xxxx : */ - if ((insn & 0x0ff000d0) == 0x075000d0) - return prep_emulate_rd16rn12rs8rm0_wflags(insn, asi); + /* SMLALD cccc 0111 0100 xxxx xxxx xxxx 00x1 xxxx */ + /* SMLSLD cccc 0111 0100 xxxx xxxx xxxx 01x1 xxxx */ + DECODE_CUSTOM (0x0ff00090, 0x07400010, prep_emulate_rdhi16rdlo12rs8rm0_wflags), - /* SBFX : cccc 0111 101x xxxx xxxx xxxx x101 xxxx : */ - /* UBFX : cccc 0111 111x xxxx xxxx xxxx x101 xxxx : */ - if ((insn & 0x0fa00070) == 0x07a00050) - return prep_emulate_rd12rm0(insn, asi); + /* SMUAD cccc 0111 0000 xxxx 1111 xxxx 00x1 xxxx */ + /* SMUSD cccc 0111 0000 xxxx 1111 xxxx 01x1 xxxx */ + DECODE_OR (0x0ff0f090, 0x0700f010), + /* SMMUL cccc 0111 0101 xxxx 1111 xxxx 00x1 xxxx */ + DECODE_OR (0x0ff0f0d0, 0x0750f010), + /* USAD8 cccc 0111 1000 xxxx 1111 xxxx 0001 xxxx */ + DECODE_CUSTOM (0x0ff0f0f0, 0x0780f010, prep_emulate_rd16rs8rm0_wflags), - /* BFI : cccc 0111 110x xxxx xxxx xxxx x001 xxxx : */ - /* BFC : cccc 0111 110x xxxx xxxx xxxx x001 1111 : */ - if ((insn & 0x0fe00070) == 0x07c00010) { + /* SMLAD cccc 0111 0000 xxxx xxxx xxxx 00x1 xxxx */ + /* SMLSD cccc 0111 0000 xxxx xxxx xxxx 01x1 xxxx */ + DECODE_OR (0x0ff00090, 0x07000010), + /* SMMLA cccc 0111 0101 xxxx xxxx xxxx 00x1 xxxx */ + DECODE_OR (0x0ff000d0, 0x07500010), + /* USADA8 cccc 0111 1000 xxxx xxxx xxxx 0001 xxxx */ + DECODE_CUSTOM (0x0ff000f0, 0x07800010, prep_emulate_rd16rn12rs8rm0_wflags), - if ((insn & 0x0000000f) == 0x0000000f) - return prep_emulate_rd12_modify(insn, asi); - else - return prep_emulate_rd12rn0_modify(insn, asi); - } + /* SMMLS cccc 0111 0101 xxxx xxxx xxxx 11x1 xxxx */ + DECODE_CUSTOM (0x0ff000d0, 0x075000d0, prep_emulate_rd16rn12rs8rm0_wflags), - return INSN_REJECTED; -} + /* SBFX cccc 0111 101x xxxx xxxx xxxx x101 xxxx */ + /* UBFX cccc 0111 111x xxxx xxxx xxxx x101 xxxx */ + DECODE_CUSTOM (0x0fa00070, 0x07a00050, prep_emulate_rd12rm0), + + /* BFC cccc 0111 110x xxxx xxxx xxxx x001 1111 */ + DECODE_CUSTOM (0x0fe0007f, 0x07c0001f, prep_emulate_rd12_modify), + + /* BFI cccc 0111 110x xxxx xxxx xxxx x001 xxxx */ + DECODE_CUSTOM (0x0fe00070, 0x07c00010, prep_emulate_rd12rn0_modify), + + DECODE_END +}; static enum kprobe_insn __kprobes space_cccc_01xx(kprobe_opcode_t insn, struct arch_specific_insn *asi) @@ -1532,7 +1522,7 @@ arm_kprobe_decode_insn(kprobe_opcode_t insn, struct arch_specific_insn *asi) else if ((insn & 0x0f000010) == 0x07000010) - return space_cccc_0111__1(insn, asi); + return kprobe_decode_insn(insn, asi, arm_cccc_0111_____xxx1_table, false); else if ((insn & 0x0c000000) == 0x04000000)